Higgs signal in Chargino-Neutralino production at the LHC

TL;DR

This paper investigates the potential to detect Higgs signals from chargino-neutralino production in supersymmetric models at the LHC, emphasizing Higgs reconstruction techniques and their effectiveness at different energies.

Contribution

It introduces and compares two Higgs mass reconstruction methods in SUSY chargino-neutralino production, demonstrating improved signal significance with jet substructure techniques.

Findings

Viable Higgs signal detection at 125 GeV with 100 fb^{-1} luminosity.

Jet substructure technique yields better signal-to-background ratio.

Detection prospects are promising at both 8 TeV and 14 TeV LHC energies.

Abstract

We have analyzed the prospect of detecting a higgs signal in mSUGRA/CMSSM based Supersymmetric(SUSY) model via chargino-neutralino($\CH_1\N0_2$) production at 8 TeV and 14 TeV LHC energy. The signal is studied in the channel with $\ell + b \bar b + \PMET$ following the decays, $\CH_1 \to W^\pm \N0_1$, $\N0_2 \to \N0_1 h$ and $h \to b \bar b$. In this analysis reconstruction of the higgs mass out of two b-jets plays a very crucial role in determining the signal to background ratio. We follow two techniques to reconstruct higgs mass: (A) using two identified b-jets, (B) using jet substructure technique. In addition, imposing a certain set of selection cuts we observe the significance is better for the latter method. We find that a viable signal can be obtained for the higgs mass $\sim$ 125 GeV with an integrated luminosity 100 $\lumi$ for both 8 and 14 TeV LHC energy.